74ABT16952

74ABT16952 16-Bit Registered Transceiver with 3-STATE Outputs November 1993 Revised August 2001 74ABT16952 16-Bit Registered Transceiver with 3-STATE Outputs General Description The ABT16952 is a 16-bit registered transceiver. Two 8-bit back to back registers store data flowing in both directions between two bidirectional buses. Separate clock, clock enable and 3-STATE output enable signals are provided for each register. The output pins are guaranteed to source 32 mA and to sink 64 mA. Features s Separate clock, clock enable and 3-STATE output enable provided for each register s A and B output sink capability of 64 mA source capability of 32 mA s Guaranteed latchup protection s High impedance glitch free bus loading during entire power up and power down cycle s Nondestructive hot insertion capability Ordering Code: Order Number 74ABT16952CSSC 74ABT16952CMTD Package Number MS56A MTD56 Package Description 56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300" Wide 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Devices also available in Tape and Reel. Specify by appending the letter suffix “X” to the ordering code. Pin Descriptions Pin Names A0–A15 B0–B15 CPABn, CPBAn CEAn, CEBn OEABn, OEBAn Description Data Register A Inputs/ B-Register 3-STATE Outputs Data Register B Inputs/ A-Register 3-STATE Outputs Clock Pulse Inputs Clock Enable Output Enable Inputs Connection Diagram Output Control OE H L L Internal Q X L H Output Z L H Function Disable Outputs Enable Outputs Register Function Table (Applies to A or B Register) Inputs D X L H CP CE H L L Internal Function Q NC L H Hold Data Load Data H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial   X  Z = HIGH Impedance = LOW-to-HIGH Transition NC = No Change © 2001 Fairchild Semiconductor Corporation DS011647 www.fairchildsemi.com 74ABT16952 Block Diagram n for either byte 1 or byte 2 www.fairchildsemi.com 2 74ABT16952 Absolute Maximum Ratings(Note 1) Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Any Output in the Disable or Power-Off State in the HIGH State Current Applied to Output in LOW State (Max) DC Latchup Source Current Over Voltage Latchup (I/O) twice the rated IOL (mA) −65°C to +150°C −55°C to +125°C −55°C to +150°C −0.5V to +7.0V −0.5V to +7.0V −30 mA to +5.0 mA −0.5V to +5.5V −0.5V to VCC Recommended Operating Conditions Free Air Ambient Temperature Supply Voltage Minimum Input Edge Rate (∆V/∆t) Data Input Enable Input Clock Input 50 mV/ns 20 mV/ns 100 mV/ns −40°C to +85°C +4.5V to +5.5V −500 mA 10V Note 1: Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. Note 2: Either voltage limit or current limit is sufficient to protect inputs. DC Electrical Characteristics Symbol VIH VIL VCD VOH VOL VID IIH IBVI IBVIT IIL IIH + IOZH IIL + IOZL IOS ICEX IZZ ICCH ICCL ICCZ ICCT ICCD Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage Output LOW Voltage Input Leakage Test Input HIGH Current Input HIGH Current Breakdown Test Input HIGH Current Breakdown Test (I/O) Input LOW Current Output Leakage Current Output Leakage Current Output Short-Circuit Current Output HIGH Leakage Current Bus Drainage Test Power Supply Current Power Supply Current Power Supply Current Additional ICC/Input Dynamic ICC (Note 4) No Load 0.18 −100 4.75 1 1 7 100 −1 −1 10 −10 −275 50 100 1.0 60 1.0 2.5 2.5 2.0 0.55 Min 2.0 0.8 −1.2 Typ Max Units V V V V V V µA µA µA µA µA µA mA µA µA mA mA mA mA mA/ MHz Min Min Min 0.0 Max Max Max Max VCC Conditions Recognized HIGH Signal Recognized LOW Signal IIN = −18 mA (Non I/O Pins) IOH = −3 mA (An, Bn) IOH = −32 mA (An, Bn) IOL = 64 mA (An, Bn) IID = 1.9 µA (Non-I/O Pins) All Other Pins Grounded VIN = 2.7V (Non-I/O Pins) (Note 4) VIN = VCC (Non-I/O Pins) VIN = 7.0V (Non-I/O Pins) VIN = 5.5V (An, Bn) VIN = 0.5V (Non-I/O Pins) (Note 4) VIN = 0.0V (Non-I/O Pins) OEA or OEB = 2.0V 0V–5.5V VOUT = 0.5V (An, B n); OEA or OEB = 2.0V Max Max 0.0V Max Max Max Max VOUT = 0V (An, Bn) VOUT = VCC (An, Bn) VOUT = 5.5V (An, B n); All Others GND All Outputs HIGH All Outputs LOW Outputs 3-STATE; All Others GND VI = VCC − 2.1V; All Others at VCC or GND Max Outputs OPEN OEA or OEB = GND, Non-I/O = GND or VCC One Bit toggling, 50% duty cycle (Note 3) Note 3: For 8-bit toggling, ICCD